Polishing-wheel.



S. A. COCHELL. POLISHING WHEEL.

APPLIUATION FILED JUNE 29, 1908.

Patented May 10, 1910.

'INVENTOR Stephen'A. Coche 1 1; /KV/l 4 l IUIBBI X 2;

WITNESSES:

STEPHEN A. GOCHELL, OF DETROIT, MICHIGAN.

POLISHING-WHEEL.

' Specification of Letters Patent.

Patented May 10, 1910.

Application filed June 29, 1908. Serial N o. 440,814.

To all whom it may concern:

Be it known that I, STEPHEN A. CooHELL, a citizen ofthe United States ofAmerica, residing at Detroit, in the county of Wayne and. State ofMichigalnhave invented certain new. and useful Improvements in Polishin-Wheels, of which the following is a s eci cation, reference being hadtherein to t e accompanying drawings.

' In the manufacture of wheels for polish ing metal, and moreparticularly the class of wheels wherein the abradant is notincorporated in the body of the wheel but is applied from time to time,as required, to the periphery, various materials are used, such as bullneck leather, walrus hide, felt, sheep skin, or the like, which eitherare very costly or are hard to balance and=keep true, fre quently burnthe surface of metal and do not possess the springy quality or lifewhich is necessary for obtaining good results.

This invention relates to a polishing wheel presenting a working body ofreadily obtained material of low cost which is easily balanced and kepttrue, and to which abradant may be quickly applied, the wheel beingresilient or lively and having: no tendency to burn the surface of metalto which it may be applied.

The invention consists in the matters hereinafter set forth, and moreparticularly pointed out in the appended claims.

In the drawings, Figure 1 is a plan view, partially broken away of awheel embodying features of the invention. Fig. 2 is a view in sectionof the wheel. Fig. 3 is a view in detail, enlarged, of a portion of thewheel body.

As herein shown, a number of disks 1 made of layers of pasted cottonlinings or like goods sewed through and through by stitching 2,preferably running in a spiral from center to circumference, are sizedon both sides with weak glue water, dried and separately balanced to runtrue. They are then glued together under pressure. The sizing pre entsthe glue penetrating the fabric, but the pressure forces it through theapertures made by the stitching needle, thereby forming a great numberof glue cylinders throu bout the body. The central part t of the w eelis compressed and an axial aperture 5 formed therein, the body beingmade hard enough to be screwed on an arbor in the usual manner andrecesses 6 resulting from the compressedcenter forming seats to receivethe customary clamping collars, or likefastenings means. Disks 7 ofheavy ironbleached cotton or the like, are glued to each side and form aconvenient means of bringing the completed wheel to true balance. he.inner margins 8 of the disks are chamfered or beveled back to reventragging out. A coating 9 of a rasive material is applied to the wheel bywetting the periphery of the wheel when running, with weak glue waterand holding against it a piece of the dressing, such as sandstone,brick, carborundum or the like. The water softens the paste of thelayers of the disk, andalso the glue cylinders which happen to be at thesurface, so that particles torn off by the wheel fibers are caught andheld thereby, 1 thus quickly forming a working face of considerablethickness in short time.

One of the advantages resulting from this construction is thespringiness or liveliness of the wheel, as the Inc does not bindall thefibers together anf keep them from moving on each other, therebyavoiding the heavy non-yielding effect common to wheels built up ofleather, felt or the like. Because.

of this arrangement, the wheel does not burn metal applied to it.Another feature is the ease with which true balance is obtained, the

disks being first individually turned up, and

then finally adjusted when assembled. Another very great advantage isthe low cost of construction and of material, which is readily obtainedin open market practically ready for assembling.

Obviously changes in the details of construction may be made withoutdeparting from the spirit of the invention and I do not limit myself toany particular form or arrangement of parts.

hat I claim as my invention is 1. A polishing Wheel having a body ofdisks formed of layers of pasted cloth sewed together, the stitchestherein forming erforations through the disks, and said disks beingbound together by glue applied to the sides thereof and forced throughthe perforations by pressure.

2. A POllSlllIlP wheel havln a body of disks formed of ayers of pastecloth sewed together by lines of stitches forming perfo Y rationsthrough the disks, the disks being secured together by glue applied totheir sized sides and forced through the perforasized and secured byglue forced throng e perforations under pressure, outer disks of heavycloth fabric glued to the sides 0 the Wheel, and 2, layer of abrasivemateriei ured by the eioth paste and disk glue to the Wheel peri hery,the central portion of she body s ng compressed more than the e portion,and being provided with i slbor egierture Whose margins are my whereof Imy signature in presence of two Wl'iZIlGSSGS.

messes:

Sirorrr inr, W/JALTER timriirsme,

